Toward Improved Rotor-Only Axial Fans—Part II: Design Optimization for Maximum Efficiency

Dan Nørtoft Sørensen, M. C. Thompson, Jens Nørkær Sørensen

    Research output: Contribution to journalJournal articleResearchpeer-review


    Numerical design optimization of the aerodynamic performance of axial fans is carried out, maximizing the efficiency in a designinterval of flow rates. Tip radius, number of blades, and angular velocity of the rotor are fixed, whereas the hub radius andspanwise distributions of chord length, stagger angle, and camber angle are varied to find the optimum rotor geometry.Constraints ensure a pressure rise above a specified target and an angle of attack on the blades below stall. The optimizationscheme is used to investigate the dependence of maximum efficiency on the width of the design interval and on the hub radius.
    Original languageEnglish
    JournalJournal of Fluids Engineering
    Issue number2
    Pages (from-to)324-329
    Publication statusPublished - 2000

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